Roller chain pin remover



April! 5, 1960 K. M. TEHVEN 2,931,165

ROLLER CHAIN PIN REMOVER Filed July 18, 1957' Fig.

5 6 7 I Fig. 3 a Fig. 2

Kenneth M. 7' eh yen INVENTOR. v am 7 7l BY 5/ 5 (pm/y Mm],

United StatcsPatentO ROLLER CHAIN PIN REMOVER Kenneth M. Tehven, Moorhead, Minn. Application July 18, 1957, Serial No. 672,682

1 Claim. (Cl. 59-7) The present invention relates to new and useful improvements in roller chain connecting pin removing devices and has for its primary object to provide, in a manner as hereinafter set forth, a tool of this character which is hand operated and which, further, may be readily adjusted to accommodate chains of various sizes.

Other objects of the invention are to provide a portable, adjustable hand operated roller chain pin removing tool of the aforementioned character which will be comparatively simple in construction, strong, durable, compact, of light weight and which may be manufactured at low cost.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawing forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a view in side elevation of a roller pin chain removing tool constructed in accordance with the present invention;

Figure 2 is a view in vertical longitudinal section through the device;

Figure 3 is a cross-sectional view, taken substantially on the line 3-3 of Figure 2, looking in the direction of the arrows; and

Figure 4 is a cross-sectional view, taken substantially on the line 44 of Figure 1, looking in the direction indicated by the arrows.

Referring now to the drawing in detail, it will be seen that the embodiment of the invention which has been illustrated comprises a base of suitable metal which is designated generally by the reference character 5. The base 5 includes a substantially rectangular plate 6 having fixed longitudinally thereon a pair of guides 7 in the form of spaced, parallel angle iron bars.

Fixed on one end portion of the base 5 is an anvil 8. The anvil 8 includes a post 9 which is fixed on the plate 6 and rises therefrom between one end portion of the guides 7. The back of the post 9 is provided with integral braces 10. The post 9, in the embodiment shown, is substantially rectangular in horizontal section and said posthas formed in its upper end portion an opening 11 the purpose of which will be presently set forth. The post 9 is further provided, at an intermediate point, with an opening 12 the purpose of which will also be presently set forth. Formed integrally with the sides of the post 9 is a pair of vertical guide ribs 13.

Mounted for vertical sliding adjustment on the post 9 is a work supporting bracket 14. The bracket 14 includes a pair of side plates 15 mounted for vertical adjust ment on the post 9 and slidably engaged with the guide ribs 13. The plates 15 are provided with vertical slots 16 which accommodate screws 17 threadedly mounted in the post 9 for securing said plates in adjusted position thereon. The bracket 14 further includes a transversely elongated chain rest or table 18 which is mounted on the.

forward edges of the plates 15 and which terminates in 2,931,165 Patented Apr. 5, 1960 drawing, reference character 20 designates a roller chain resting on the table 18 in side abutting engagement with the post 9 of the anvil 8, said chain comprising a pin 21 to be removed.

Mounted for sliding adjustment on the base plate 6 between the guides 7 is a metallic block or body 22. Fixed in the block or body 22 at an intermediate point and projecting therefrom is a guide pin 23 which is slidably engaged in the opening 12 in the post 9. An adjusting screw 24 threadedly connects the block or body 22 to the post 9.

The upper portion of the block or body 22 has formed therein a threaded bore 25 'with the inner end portion of which a longitudinal slot 26 communicates. A punch driving screw 27 is threadedly mounted in the bore 25. The screw 27 actuates a punch 28 slidably mounted in the inner end portion of the bore 25 and including a reduced end portion 29 which is engageable with the pin 21 to be removed for forcing said pin out of the chain 20'. The punch 28 further includes an upstanding handle 30 which is operable in the slot 26.

It is thought that the use of the tool will be readily apparent from a consideration of the foregoing. Briefly, the chain 20 to be separated or severed is mounted on the table 18 of the bracket 14 and extends transversely across the front of the post 9. The bracket 14 is then adjusted vertically to align the pin 21 to be removed with the opening 11 in the post 9. The screw 27 is then threaded inwardly in the block or body 22 for actuating the punch 28 for ejecting the pin 21 from the chain 20 into the opening 11 of the anvil 8 in an obvious manner. Of course, the anvil 8 supports the chain 20 against the pressure from the screw 27. For various sizes of chains the block or body 22 is slidably adjusted toward or away from the anvil 8 through the medium of the screw 24.

From the foregoing, the construction and-operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

A roller chain pin removing tool comprising a base, an anvil including a stationary post fixed on the base and having an opening in its upper portion, a bracket mounted for vertical sliding adjustment on the post for supporting the chain with the pin to be removed therefrom in alignment with the opening, a body slidably mounted on the base and opposing said post, vertical longitudinally said post and body for positioning said body in alignment with said post, a bolt extending through said body and threadedly engaging the post for adjusting the body toward or away from the post, a guide pin in said body extending through said post for further aiding the alignment of said post and said body, said body having a bore therein aligned with the opening,.a punch slidable in said bore and engageable with the pin for ejecting said pin from the chain into the opening, means provided on said punch and in said body for preventing rotation of said punch, and an operating screw for actuating the punch threadedly mounted in the body.

References Cited in the file of this patent UNITED STATES PATENTS 893,226 Childs July 14, 1908 (Other references on following page) 3 v 7 -UNITED' STATES PATENTS ONea1 Dec. 23, 1913' Keiper May 10, 1921 1Vogl Nov. 15, 1932 Fisher Apr. 30, 1935 Lewis Feb. 15, 1938 Iakoubek a a1. Apr. 27, 1948 Smith Mar. 30, 1954 FOREIGN PATENTS France Feb. 10, 1947 Great Britain July 11, 1 949 

